To start off with...I'm not a Daytona purist. If I was , I would have to say a DW or Spinmaster piece is the route to go...but for $600, this is a significant purchase compared with one of the other options.
I have 2 6263's, both with the Seagull ST19 manual wind movement. The movement is rock solid and reliable, and the font for the "Rolex Cosmograph" is not so heavy and bold. Sorry for the crap pics.
I have the panda dial version as well as the black/red:
These versions I have are loaded with flaws:
Incorrect trip-lock crown Symmetrical chrono pushers Wrong crystal shape Incorrect bracelets etc
In spite of this...I love them. They are beautiful watches...and you have to figure out if going for accuracy is that important to you. If not, there are significantly cheaper alternatives worth considering.